package test10;

import java.util.*;

class ArrayUtils{

	public static double findMax(double[] arr,int begin, int end) throws IllegalArgumentException{
		double max;
		if(begin>=end)
			throw new IllegalArgumentException("begin:"+begin+" >= "+"end:"+end);
		else if(begin<0){
			throw new IllegalArgumentException("begin:"+begin+" < 0");
		}
		else if(end>arr.length){
			throw new IllegalArgumentException("end:"+end+" > arr.length");
		}else{
			max = arr[begin];
			for (int i = begin+1; i < end; i++) {
				if(arr[i]>max){
					max = arr[i];
				}
			}
		}
		return max;
	}
}
public class Main {

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		int n = in.nextInt();
		double[] arr = new double[n];
		for (int i = 0; i < arr.length; i++) {
			arr[i] = in.nextDouble();
		}
		while(in.hasNextInt()){
			int begin = in.nextInt();
			int end = in.nextInt();
			double max = 0;
			try{
				max = ArrayUtils.findMax(arr, begin, end);
				System.out.println(max);
			}catch(IllegalArgumentException e){
				System.out.println(e);
			}
			
		}
		try{
	         System.out.println(ArrayUtils.class.getDeclaredMethod("findMax", double[].class,int.class,int.class));
	    } catch (Exception e1) {
	    }
	}

}
